When to Check
Check the tires once a month or more.
Do not forget the spare tire. See Full-Size Spare Tire for additional information.
See also:
Fuels in Foreign Countries
Never use leaded gasoline or any other fuel not recommended in the previous text
on fuel. Costly repairs caused by use of improper fuel would not be covered by the
vehicle warranty.
To check the ...
Accessories and Modifications
Adding non—dealer accessories or making modifications to the vehicle can
affect vehicle performance and safety, including such things as airbags,
braking, stability, ride and handling, emissions sys ...
Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will
check the engine, transmission, antilock brakes, and major vehicle systems.
It also checks the tire pressures, if the v ...